val run_check_at_exit :
Toggle to turn on/off checking for descriptor leaks at exit (default: off)
val critical :
Fraction of maximum number of descriptors considered critical.
val report_open_files :
unit -> unit
report_open_files () prints a dump of open file descriptors to
in two formats, one using the proc file system, the other by executing
/usr/sbin/lsof in a child process.
val report_on_exn :
exn -> unit
val get_num_open_fds :
unit -> int
val percent_fds_in_use :
unit -> float
percent_fds_in_use () reports the percentage of fds that are in use.